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The U.S. Environmental Protection Agency has granted California environmental regulators waivers to officially move forward with the agency’s aggressive plans to transition diesel trucks to electric vehicles and expand the length of truck warranties.

Knight-Swift Transportation Holdings has reached an agreement to acquire U.S. Xpress for approximately $808 million, the companies announced March 21.

U.S. Class 8 retail sales in February jumped 35% from a year ago, and notched a slight increase from the prior month, Wards Intelligence reported.

U.S. Class 8 retail sales in January rose 34.2% year-over-year, Wards Intelligence reported.

LAS VEGAS — Daimler Truck North America has unveiled its SuperTruck II high-efficiency tractor-trailer combination, featuring freight efficiency gains that the company said are built around equipment and components central to real-world tractor-trailer operation.

U.S. Class 8 retail sales in December reached an all-time monthly high, Wards Intelligence reported.

Class 8 U.S. retail sales in November were the second-highest this year and continued the trend since May of monthly gains compared with a year earlier, Wards Intelligence reported.

U.S. Class 8 retail sales in October improved 34.5% compared with a year earlier, Wards Intelligence reported as all but one truck maker notched higher sales.

U.S. Class 8 retail sales in September were nearly 23,000 and reached the second-highest total this year, Wards Intelligence reported.

Class 8 U.S. retail sales in August reached their high point for the year, clearing 23,000 for a 29.7% increase compared with a year earlier, Wards Intelligence reported.